RU202294U1 - TWO-CHAIN INCREASED ANCHOR-ANGULAR MULTI-FACE SUPPORT OF POWER LINE - Google Patents

Abstract

The utility model relates to the construction of electric power facilities, in particular to the supports of overhead power transmission lines combined with a fiber-optic communication line, namely to a double-circuit elevated anchor-angular multifaceted support with a single-row arrangement of wires 110-220 kV. The double-chain raised anchor-angular multifaceted support of the power transmission line contains a multifaceted rack fixed on the foundation and consisting of four sections, while on the upper section at an angle to the support two multifaceted cantilever inclined traverses are fixed, fastened by the middle traverse and attached to both sides of the cantilever horizontal traverses for suspension of phase wires with the formation of a Y-shaped support, and the sections of the rack and sections of the cantilever inclined traverses are connected to each other by means of a bolted connection through a shortened extension of shells in half the diameter in two places on the inner upper and outer lower flanges with a reinforced vertical rib, and the mentioned cantilever inclined and cantilever horizontal traverses are straightened in a circle with horizontal, inclined and vertical cables to the trunk. The technical result of the patented solution is to reduce the material consumption of the double-circuit increased anchor-angular support while maintaining the required rigidity and strength of its structure.

Description

The utility model relates to the construction of electric power facilities, in particular, to the supports of overhead power lines combined with a fiber-optic communication line, namely to a double-circuit elevated anchor-angular multifaceted support with a single-row arrangement of wires 110-220 kV.

Today, the relevance of the use of power transmission line supports (PTL) on a multifaceted bent rack (MGS) is growing every day. In particular, supports with an increased arrangement of wires, with a large clearance to the ground. Supports with an increased location of wires, with a large dimension to the ground, make it possible to preserve the forest thicket. The main disadvantage of such supports is their high weight. But, despite this, the power transmission line supports on the MGS have high reliability, durability and vandal resistance, as well as a good economic effect.

The following support structures are known from the prior art.

So, from the description to the patent of the Russian Federation No. 13214 (published on 09/10/2013), a single-chain intermediate support is known, the trunk of which consists of an upper section and a lower section, a lower traverse with consoles and an upper traverse with consoles are fixed on the barrel, while the traverses are fixed on the section, the consoles are designed for fixing the phase wires of overhead power lines, and the console is for fixing the optical cable, the barrel of the steel support can have a closed polyhedral cross-section or a closed oval cross-section, it can be made lattice with a diagonal or non-angled lattice.

The closest analogue to the patented solution is the design of an intermediate double-circuit steel support of a three-phase overhead power line containing a trunk made of polyhedral racks and multi-faceted traverses for suspending phase wires and a lightning protection cable, while the racks of the trunk and traverses are connected by means of flanges (RF patent No. 73905 , published 10.06.2008).

The disadvantages of the known design are the presence of additional traverses, an increase in the height of the support and, as a consequence, its metal consumption, complication of the installation of the support and the operation of overhead power lines. The use of the specified combined bolted connection through a shortened extension of shells in half the diameter in two places on the inner upper and outer lower flanges, both with and without a reinforced vertical rib, as the barrel and traverse leads to a decrease in metal consumption (reduction in the thickness of the flanges, the absence of the need for additional ribs) compared to a conventional flange joint, by increasing the attachment points of the shell of one joint, by means of bolted joints through a shortened extension of the shells in half the diameter in two places on the inner upper and outer lower flanges, both with and without a reinforced vertical rib, and how consequently, the forces in the flanges are significantly reduced. The additional frictional forces of the surface of the superimposed shells during operation reduce the longitudinal forces in the shell and bending forces in the flanges. This eliminates the need for thicker, heavy flanges and additional ribs. The technical problem to be solved by the claimed utility model is the creation of a double-circuit elevated anchor-angular polyhedral support with a single-row arrangement of wires of a three-phase overhead line 110-220 kV, which allows to reduce the consumption of materials while maintaining the required rigidity and strength of the structure, to simplify the installation of the support, to reduce the weight of the foundation and the value of its burial.

The technical result of the patented solution is to reduce the material consumption of the double-chain increased anchor-angular support while maintaining the required rigidity and strength of its structure.

The claimed technical result is achieved due to the double-circuit increased anchor-angular multifaceted support of the power transmission line, which contains a multifaceted rack fixed on the foundation and consisting of four sections, while on the upper section at an angle to the support are fixed two symmetrical multifaceted cantilever inclined traverses, which are horizontal the planes are fastened by a middle traverse with cantilever horizontal traverses attached on opposite sides to suspend two chains of phase wires to form a Y-shaped support, and the barrel sections and cantilever inclined traverses are connected by means of bolted joints through a shortened shell extension in half the diameter in two places on the inner upper and the outer bottom flanges, both with and without a reinforced vertical rib, and to the mentioned cantilever inclined traverses, in the upper part in the horizontal plane, cantilever shortened traverses are attached to fasten the cable. In addition, cantilever horizontal traverses, cantilever inclined traverses in the upper part in a circle are fastened with a cable to the trunk, which significantly increases the rigidity of the support.

Due to the implementation of the support of the Y-shaped geometry, containing a multifaceted rack, consisting of four sections and two cantilever inclined traverses, fixed at an angle to the support, fixed in the horizontal plane by the middle traverse and attached on opposite sides of two cantilever horizontal traverses for hanging two chains of phase wires, it is possible to suspend six wires in one tier, thereby reducing the number of traverses, decreasing the height of the rack and, as a consequence, reducing the metal consumption of the support, while the transmitted electrical load remains the same. The connection of the barrel sections and cantilever inclined traverses by means of a bolted connection through a shortened half-diameter shell extension in two places on the inner upper and outer lower flanges, both with and without a reinforced vertical rib, allows to ensure the reliability, strength and rigidity of the support structure by inserting each into the other shells by half the diameter, reducing the longitudinal forces of separation of the shells from each other due to the frictional forces of the puffing of the shells. The extension of shells in half the diameter, in conjunction with the inner upper and outer lower flanges, significantly reduces bending forces in the flanges and, as a result, there is no need for additional ribs and heavy thickened flanges, and fastening in a circle to the rack of cantilever inclined traverses, console horizontal traverses horizontal and inclined ropes allows you to reduce the forces in the attachment points arising from the weight of the traverse with wires. Thus, the required rigidity and strength of the structure of the increased anchor-angular support is provided, that is, its ability to withstand the loads acting on the support. Fastening of the same traverses with vertical cables at an angle to the rack allows to reduce the horizontal and vertical deviations of the traverses and the anchor-angular support in general.

In a particular case of implementation, to the cantilever inclined traverses by means of a bolted connection through a shortened extension of shells in half the diameter in two places on the inner upper and outer lower flanges, both with and without a reinforced vertical rib, in the upper part there are cabled horizontal cantilever traverses of a polyhedral section for fastening a ground wire or cable of a fiber-optic communication line (FOCL).

Cantilever horizontal traverses, middle traverse for hanging phase conductors and cantilever shortened traverses for attaching ground wire can be made in the form of hollow truncated pyramids of oval or circular cross-section made of steel sheet.

In particular, on each cantilever horizontal traverse and middle traverse for hanging two chains of phase wires horizontally in a tensioned position on both sides 12 paired insulators are suspended - 6 on each, for fastening and tensioning 4 wires - 2 on each, straight, suspended supporting insulator and 2 suspension support insulators in a group are suspended in a V-shape for fixing the bypass wire. This solution is necessary in order to ensure a safe distance to live parts (inclined traverses) by limiting the deflection of insulators in the group suspended in a V-shaped way, and suspended horizontally on ground wire traverses in a tensioned position on both sides 4 - 2 on each, paired insulators for fastening and tensioning the ground wire or FOCL cable and 2 vertical supporting insulators for fastening the bypass ground wire.

The essence of the proposed technical solution is illustrated by references to the figures, which show the following.

Figure 1 is a general front view of the support.

Figure 2 is a general perspective view of the support.

Figure 3 shows a unit for attaching the inclined traverse to the trunk.

Figure 4 shows the attachment point for tension and V-shaped strings for suspension of phase wires. Wire suspension.

Figure 5 is a cross-sectional view of the assembly for attaching the support to the foundation.

Figure 6 is a sectional view of fastening the rack sections to each other.

Figure 7 shows the attachment point for the sections of the inclined traverse of the wire to each other.

Figure 8 shows the attachment point for the vertical cable to the barrel section.

Figure 9 shows the attachment point for the cantilever traverse of the wire to the inclined one. Wire suspension.

Figure 10 shows the attachment point for the cantilever cable cross member to the inclined one. Ground wire suspension.

The support post is made of steel, has a closed circular polyhedral cross-section and consists of four polyhedral sections 2,3,4, and 5, connected to each other by a bolted connection through a shortened shell extension in half the diameter in two places on the inner upper 23 and outer lower 23 flanges as with and without a reinforced vertical rib 28, while the bolts are oriented perpendicular to the plane of the flanges 23. The lower section 2 is bolted through a straight support flange 1. The straight support flange 1 is attached to the matching support flange of the foundation embedded part (not shown in the figure ) through the pins.

On the trunk of the upper section 5, at an angle to the support, two cantilever inclined traverses are bolted on straight flanges 24 through vertical ribs 25. Each cantilever inclined traverse consists of two sections 6, 7 bolted together through a shortened shell extension in half the diameter in two places on the inner upper 23 and the outer lower 23 flanges, both with and without a reinforced vertical rib 28, and fixed in the horizontal plane by the middle traverse 8 and fixed on opposite sides of two cantilever horizontal traverses 9 for hanging two chains of phase wires, while cantilever inclined traverses, cantilever horizontal traverses 9 are located opposite each other, forming a Y-shaped support, and the middle traverse 8 and two cantilever horizontal traverses 9 are bolted on straight flanges 26 through vertical ribs 27, which in turn are rigidly fixed to section 7 of the inclined traverses. To reduce the efforts in the attachment points of the cantilever inclined traverses, the middle traverse 8 and two cantilever horizontal traverses 9 located in the horizontal plane, arising from the weight of the wires 19 and cables 20, in the upper part they are interconnected in a circle by steel cables 16, 17, 18 as follows method: - steel cables 16 at an angle are attached from opposite sides to the section of the trunk 3 through the attachment 29 and in the upper part to the cantilever horizontal traverse 9; - steel cable 17 in the upper part of the horizontal plane is attached to the sections 7 of the cantilever inclined traverse; - steel cables 18 at an angle connect the cantilever inclined traverses in section 7 and cantilever horizontal traverses 9 for fastening the wire 19. On each cantilever inclined traverse in section 7 in the upper part there is one cantilever shortened traverse 10 for fastening the ground wire 20, bolted on the flanges 30 through vertical ribs 31. Sections 2, 3, 4 and 5, sections 6, 7 cantilever inclined traverses, middle traverse 8, two cantilever horizontal traverses 9 for suspension of phase wires 19 and two cantilever shortened traverses 10 for suspension of ground wire 20 are made by a multifaceted method bending in the form of hollow truncated pyramids of oval or circular cross-section from steel sheet.

On each cantilever horizontal traverse 9, four paired tension insulators 11 are suspended from opposite sides for suspending wires 19 and two straight suspension supporting insulators 12 for a bypass wire 21 around a cantilever horizontal traverse 9. On the middle traverse 8, four paired tension insulators are suspended from opposite sides 11 for the suspension of wires 19 and two paired insulators 13 in a group are suspended in a V-shape for the bypass wire 21 and preventing deflection under wind action. Insulators 11, 12, 13 are suspended taking into account the equal safe distance from each other of the suspension points of the wires 19 of the bypass wires 21, providing a certain safe distance of the wire 19 and the bypass wires 21. At the free end of each cantilever shortened traverse 10, two paired tensioning insulator 14 and one straight suspended supporting insulator 15 for bypassing the ground wire 20 with a bypass ground wire 22 around the traverse 10 at a safe distance for fastening the ground wire 20 or the FOCL cable.

Installation of the proposed support for power lines is as follows.

A reinforced concrete foundation is installed with an embedded part (not shown in the figures). The lower section 2 is lifted by a truck crane and fixed with a bolted connection through a straight support flange 1 to the counter flange of the foundation embedded part. Subsequent sections 3, 4, 5 to each other in ascending order by means of a truck crane are lifted and bolted through a shortened extension of shells in half the diameter in two places on the inner upper 23 and the outer lower 23 flanges, both with and without a reinforced vertical rib 28 ... Using a transition platform or a lift, the installer bolts the joints of the outer flange 23 and, penetrating from above to the inside of the section on the suspension system, pulls the inner flange 23 and the flange of the reinforced rib 28. Next, on the ground, cantilever inclined traverses are assembled from sections 6, 7 through a shortened shell extension into half the diameter in two places on the inner top 23 and outer bottom 23 flanges, both with and without a reinforced vertical rib 28, and without it, are lifted by a truck crane and bolted through the flanges 24. Then, the middle beam 8 is lifted with a truck crane and fixed to the cantilever inclined beam of section 7 with bolted connection through flanges 26, in a similar way, cantilever horizontal traverses 9 are attached. After that, cantilever inclined traverses in the upper part of sections 7 and cantilever horizontal traverses 9 are fastened with steel cables 16, 17, 18 in a circle to the trunk of section 3 as follows: - steel cables 16 v vertical plane at an angle are mounted with opposite floor the outer sides to the section of the trunk 3 through the attachment 29 and in the upper part to the cantilever horizontal traverse 9; - the steel cable 17 in the upper part is attached to the sections 7 of the cantilever inclined traverse; - steel cables 18 in the upper part connect the cantilever inclined traverses in section 7 and cantilever horizontal traverses 9. After that, the cantilever shortened traverses 10 are lifted by a truck crane and fixed in the upper part of the cantilever inclined traverse section 7. A steel cable 17 through a lanyard pull the cantilever inclined traverses together. Steel cables 18 through a lanyard pull together cantilever horizontal traverses 9 with a cantilever inclined traverse. Steel cables 16 through a lanyard pull the cantilever horizontal traverses 9 to the trunk of section 3. Installation of the support is completed on this and after suspension on cantilever horizontal traverses 9, tension paired insulators 11 with wires 19, straight suspension supporting insulators 12 with a bypass wire 21, on the middle traverse 8 tension paired insulators 11, with 19 wires, suspended supporting insulators in a group are suspended in a V-shaped manner of insulators 13 with a bypass wire 21, on cantilever shortened traverses 10 tension paired insulators 14 with a ground wire 20 or a fiber-optic cable, direct suspended supporting insulators 15 with a bypass ground wire 22 or FOCL cable, the power line is ready for operation.

Thus, an increase in the length of the cantilever horizontal traverses and the use of an average traverse between them for suspension in one tier, two wires for each cantilever horizontal traverse and two wires for the middle traverse, makes it possible to reduce the number of traverses, while reducing the height of the trunk and, accordingly, the metal consumption of the support, while due to this design, the required rigidity and strength of the support is provided.

Claims (6)

1. Double-chain elevated anchor-angular multifaceted support of a power line, characterized by the fact that it contains a multifaceted rack, fixed on the foundation and consisting of four sections, while on the upper section at an angle to the support are fixed two multifaceted cantilever inclined traverses, fixed in the horizontal plane of the middle a traverse and two cantilever horizontal traverses for hanging phase wires to form a Y-shaped support, and the sections of the rack and the inclined traverses are connected to each other by means of a bolted connection through a shortened shell extension in half the diameter in two places on the inner upper and outer lower flanges with a reinforced vertical rib ... 2. Support according to claim. 1, characterized in that to the inclined traverses in the upper part by means of a bolted connection on the flanges, polyhedral cable traverses are attached for fastening the ground wire. 3. The support according to claim 1, characterized in that the shortened shell extension on the flanges is made with the upper section inserted into the lower one by half the diameter and is bolted in two places through the inner upper and outer lower flanges with a reinforced vertical rib. 4. The support according to claim. 1, characterized in that the barrel sections, cantilever inclined traverses, cantilever horizontal traverses for suspension of phase conductors and cantilever shortened traverses for suspension of ground wire can be made in the form of hollow truncated pyramids of circular cross-section made of steel sheet. 5. The support according to claim 1, characterized by the fact that the cantilever inclined traverses in the upper part are fastened together with a horizontal cable, the cantilever horizontal traverses for hanging wires at an angle in the upper part are fastened to the cantilever inclined traverses with inclined cables and the cantilever horizontal traverses are fastened at an angle with vertical cables to the barrel section. 6. The support according to claim 1, characterized in that on each cantilever horizontal traverse for suspension of 3-phase wires there are 4 paired tension insulators for hanging wires and two straight suspension supporting insulators for a bypass wire around the cantilever horizontal traverse, and on the middle traverse is suspended 4 paired tension insulators for suspending the wires and two paired supporting insulators in a group are suspended in a V-shape for the bypass wire, in addition, at the free end of each cantilever shortened traverse, two paired tension insulators and one straight suspended supporting insulator are suspended for bypassing the ground wire with a bypass ground wire around the traverse at a safe distance for attaching the ground wire.

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